TWI687156B - Electric shears - Google Patents

Abstract

An electric shear is provided. The electric shear includes a safety mechanism that can effectively prevent children or people who do not know how to use the machine from erroneously causing the machine to move, and the convenience of using the safety mechanism is not deteriorated.

The electric shear system is configured to obtain: a locked state in which the operation of the motor 12 is not permitted; and a standby state in which the motor 12 is operated by the operation of the operating member 22; the operating member 22 and the unlock switch are operated at a predetermined timing in the locked state At 26 o'clock, it becomes the standby state.

Description

Electric shears

The invention relates to an electric shear used for opening and closing a blade portion by electric power.

Such an electric shear system is used for trimming trees, for example, and can open and close a pair of blades by the driving force of a motor, and cut objects such as branches.

Because such an electric scissors may be injured when it is mishandled, it is better to provide a mechanism that is not easy to move when a child or a person who does not know how to use the machine accidentally touches it.

For example, Patent Document 1 discloses a configuration in which a sub-trigger is provided in a handle portion, and the motor is driven when the main trigger is pulled when the sub-trigger is gripped and operated. According to this configuration, since the electric shear does not perform the cutting operation unless both the sub-trigger and the main trigger are operated, it can be made that it is not easy for the child or a person who does not know how to use the machine to accidentally touch it.

In addition, Patent Document 2 discloses that only when the main power supply is turned on, the machine cannot be driven, and if the trigger switch is not pressed for a long time, the machine will not be in a operable state.

【Advanced Patent Literature】

【Patent Literature】

[Patent Document 1] Japanese Unexamined Patent Publication No. 2013-166244

[Patent Document 2] Japanese Patent Laid-Open No. 2009-39034

However, in the configuration of the above-mentioned Patent Document 1, the cutting operation will not be performed unless the grip portion is gripped, so the usability may be poor. For example, there are cases where it is difficult to grasp the handle part depending on the posture to perform work, and in this case, the usability is poor.

In addition, the structure of Patent Document 2 described above is a mechanical operation by a simple operation of long pressing the trigger switch, so there is a problem that even a child or a person who does not know how to use the machine can accidentally operate the machine.

Therefore, the object of the present invention is to provide an electric shear, which includes a safety mechanism that can effectively prevent children or people who do not know how to use the machine from erroneously causing the machine to operate, and the convenience of using the safety mechanism does not change difference.

The present invention was developed to solve the above-mentioned problems and has the following features.

The features of the invention as claimed in item 1 of the patent scope include: two blades; a power source, which causes at least one of the two blades to close; an operating member, which controls the action of the power source; and an unlock switch, which It is provided separately from the operating member; it is configured to obtain: a locked state, which does not permit the action of the power source; and a standby state, which is operated by the operation member and the power source acts; in the locked state, it operates at a predetermined timing When the operation member and the unlock switch are in the standby state.

The invention as claimed in item 2 of the patent application is characterized not only as the feature point of the invention as claimed in item 1 of the patent application, but also as the locked state immediately after the main power source is turned on.

For example, the invention of the third patent application is characterized by not only the feature points of the invention of the first or second patent application, but also the feature: the unlocking relationship is set by placing the finger in the hand of the operating member Non-contact location.

For example, the invention of claim 4 is characterized by not only the features of the invention as claimed in any of items 1 to 3 of the patent application, but also the feature of operating the operating member and the unlock switch simultaneously in the locked state Time, it becomes the standby state.

For example, the invention of claim 5 is characterized by not only the feature points of the invention as described in any of items 1 to 4 of the patent application, but also the feature: when no operation is detected in the standby state for more than a predetermined time To become the locked state.

The invention as claimed in item 1 of the scope of patent application is as described above, and is configured to obtain: a locked state, which does not permit the operation of the power source; and a standby state, which is the operation of the power source by the operation of the operating member; in the locked state When the operation member and the unlock switch are operated at a predetermined time sequence, this standby state is achieved. That is, on the occasion of operating the operating member and the unlock switch at a predetermined timing, the state transition is made from the locked state to the standby state, and the machine is operable. If the special operation of operating a plurality of switches in this way is not performed, the machine will not become operable, so children or people who do not know how to use the machine will not move the machine. Because special operations are not performed in this way, the machine does not move, so accidents can be effectively prevented.

Also, because it is not as shown in the structure of Patent Document 1, The operation member is restricted after the handle part, so it can be operated without any problem even if it is difficult to grasp the handle part. That is, as a result of improving safety, there is no problem of poor usability of the machine.

In addition, if the invention of the second item of the patent application range is as described above, the locked state immediately after the main power supply is turned on. According to this configuration, because only the main power source is turned on, the machine does not move even if the operation member is operated, so there is no danger that a child or a person who does not know how to use the machine may operate the operation member by mistake.

In addition, as the invention of claim 3 in the patent application range is as described above, the unlocking relationship is set at a position where the finger is not in contact with the hand of the operation member. According to this configuration, the possibility of accidentally operating the unlock switch and the operating member becomes low. In other words, since the possibility of a child or a person who does not know the usage of the machine erroneously unlock becomes lower, the safety can be further improved.

Moreover, as the invention of claim 4 of the patent application range is as described above, when the operating member and the unlocking switch are simultaneously operated in the locked state, the standby state is established. According to this configuration, since the lock state can be shifted to the standby state by a simple operation, the workability is excellent.

In addition, if the invention of claim 5 of the patent application is as described above, when the standby state does not detect an operation for a predetermined time or longer, it becomes the locked state. According to this configuration, the machine will not be left unattended for a long time while it is still on standby. Because children or people who do not know how to use the machine will not operate the machine that is placed in the empty space of the operation room, it will not move, so it can improve safety.

10‧‧‧Electric scissors

11‧‧‧Cable connection

12‧‧‧Motor (power source)

13‧‧‧Ball screw mechanism

14‧‧‧Reduction mechanism

15‧‧‧Link mechanism

15a‧‧‧Drive shaft

15b‧‧‧1st link

15c‧‧‧ 2nd link

16‧‧‧Supporting member

16a‧‧‧Guide groove

17‧‧‧Housing

17a‧‧‧Link cover part

17b‧‧‧Operation member protection department

17c‧‧‧handle

17d‧‧‧ Rear

17e‧‧‧ Rear face

17f‧‧‧Protection wall

18‧‧‧1st blade

18a‧‧‧Cut off

18b‧‧‧Root

18c‧‧‧Connecting shaft

19‧‧‧ 2nd blade

19a‧‧‧Cut off

19b‧‧‧Root

19c‧‧‧Connecting shaft

20‧‧‧ Blade shaft

22‧‧‧operating member

22a‧‧‧axis

22b‧‧‧First operation section

22c‧‧‧roll

22d‧‧‧ 2nd operation section

23‧‧‧swing member

23a‧‧‧swing axis

23b‧‧‧ Pushing Department

24‧‧‧Micro switch

24a‧‧‧Contact Department

25‧‧‧Sensor

26‧‧‧Unlock switch

26a‧‧‧Magnet

27‧‧‧Spring

28‧‧‧Hall IC

29‧‧‧Unlock switch

Figure 1 is the right side view of the electric shear.

Figure 2 is a right side view showing the internal structure of the electric shear.

Figure 3 is a left side view showing the internal structure of the electric shear.

Fig. 4 is an explanatory diagram showing the cutting operation, Fig. 4 (a) is a diagram showing a state where the blade is opened, and Fig. 4 (b) is a diagram showing a state where the blade is closed.

Fig. 5 is an explanatory diagram showing the operation of the operating member, Fig. 5 (a) is a diagram of a state where the operating member is not operated, and Fig. 5 (b) is a diagram of a state where the first operating part has been operated, Fig. 5 (c) is a view of the state in which the second operation unit has been operated.

Figure 6 is a perspective view of the electric scissors viewed from the rear.

Fig. 7 is a diagram showing the internal structure of the rear part of the electric shear, Fig. 7 (a) is a diagram in a state where the unlock switch is not pressed, and Fig. 7 (b) is a diagram in a state that the unlock switch is pressed.

Fig. 8 is a right side view of the electric shear of another embodiment.

With reference to the drawings, an embodiment of the present invention will be described.

The electric shears 10 of the present embodiment are used, for example, for pruning trees, etc., and a pair of blades 18, 19 are opened and closed by a driving force of a motor 12 as a power source, and cutting objects such as branches are cut.

This electric shear 10 is shown in Figures 1 to 3 and includes: a housing 17; a cable connection portion 11, which is provided at the rear end 17d of the housing 17; a motor 12; and a ball screw mechanism 13, which is used to connect the motor The rotary motion of 12 is transformed into a linear motion motion; the support member 16 guides the linear motion of the ball screw mechanism 13; the link mechanism 15 is used to convert the linear motion of the ball screw mechanism 13 into two blade portions 18, 19 Opening and closing operations; the first blade portion 18 and the second blade portion 19 are operated by the link mechanism 15; the operating member 22 is provided as an operating portion for controlling the motor 12; the swing member 23 is used to track the operating member 22 Square Micro-switch 24, through which the swing member 23 pushes the contact; the sensor 25, which detects the rotation angle of the operating member 22; and the unlock switch 26, which is provided separately from the operating member 22.

The housing 17 is not specifically shown, and is composed of two divided pieces. The operating mechanism is housed inside and covers almost the entire machine. In addition, the housing 17 includes: a link cover portion 17a, which covers the link mechanism 15; an operating member protection portion 17b, which forms a ring so as to cover the periphery of the operating member 22; and a handle portion 17c, which can be gripped by the user It is formed in the way of entering; and the rear end portion 17d is provided at the rear portion of the handle portion 17c.

The link cover portion 17a accommodates the link mechanism 15 provided at the front end portion of the housing 17, and protrudes the first blade portion 18 and the second blade portion 19 from the front end portion.

The operation member protection portion 17b is provided below the rear portion of the link cover portion 17a, and is provided at the boundary (between) of the link cover portion 17a and the handle portion 17c. The operation member protection portion 17b is formed in a ring shape, and when the user grips the handle portion 17c, it is arranged to hook the index finger into the ring-shaped operation member protection portion 17b. Inside the operation member protection portion 17b, the operation member 22 is exposed to be operable. The details will be described later. The first operating portion 22b (trigger) of the operating member 22 is exposed to be operable at the front (handle portion 17c side), and the second operating portion 22d of the operating member 22 is exposed at the front (side of the link cover portion 17a) Into operable.

The handle portion 17c is formed to be thinner than the link cover portion 17a and slightly thinner than the rear end portion 17d, so that the user can easily grasp it. A ball screw mechanism 13 is built into this handle portion 17c.

The rear end portion 17d accommodates the motor 12 provided at the rear end of the housing 17, and the cable connection portion 11 is provided at the rear end surface 17e.

The cable connection portion 11 is a portion for connecting a cable (not shown), and includes a terminal for connecting a power line or a signal line. The cable connected to the cable connection portion 11 is connected to a power supply device (not shown). The power switch is installed in the power supply device or the cable, and by inputting the power switch, electric power is supplied from the power supply device to the electric scissors 10 via the cable.

The motor 12 is a power source that causes the first blade portion 18 and the second blade portion 19 to perform the closing operation, and operates by the power supplied from the power supply device. The output shaft of the motor 12 is connected to a ball screw mechanism 13 described later. In addition, the speed reduction mechanism 14 or the like may be provided between the output shaft of the motor 12 and the ball screw mechanism 13, or the output shaft of the motor 12 may be directly connected to the ball screw mechanism 13.

The ball screw mechanism 13 converts the rotation motion of the motor 12 into a linear motion motion. The ball screw mechanism 13 is not specifically shown, and includes: a screw shaft that receives the rotational force of the motor 12 to rotate; and a nut portion that engages with the screw groove of the screw shaft. Accordingly, when the screw shaft is rotationally driven by the driving force of the motor 12, the nut portion moves linearly along the screw shaft. The nut portion is connected to a drive shaft 15a of a link mechanism 15 described later. The drive shaft 15a is formed so as to linearly move back and forth integrally with the nut portion.

The support member 16 is used to guide the linear movement of the ball screw mechanism 13. A guide groove 16a extending in the guide direction is provided on the support member 16, and the drive shaft 15a of the link mechanism 15 is engaged with the guide groove 16a. Therefore, the nut portion and the drive shaft 15a move along the extending direction of the guide groove 16a.

The link mechanism 15 converts the linear motion of the drive shaft 15a into opening and closing operations of the first blade portion 18 and the second blade portion 19. The link mechanism 15 includes a first link 15b and a second link connected to be rotatable by a drive shaft 15a 15c. The first link 15b has one end connected to the drive shaft 15a, and the other end connected to the first blade portion 18 via a connection shaft 18c. In addition, the second link 15c is connected at one end to the drive shaft 15a, and at the other end to the second blade portion 19 via the connection shaft 19c.

The first blade portion 18 and the second blade portion 19 are supported so as to be rotatable about the blade shaft 20 as a fulcrum, and are combined to cross the blade shaft 20. The first blade portion 18 is a cutting portion 18a formed with a blade at the tip end side of the blade shaft 20, and the root portion 18b closer to the root side than the blade shaft 20 is rotatably connected to the first link 15b via a connecting shaft 18c. Similarly, the second blade portion 19 is a cutting portion 19a formed on the tip side of the blade shaft 20, and the root portion 19b on the root side of the blade shaft 20 is connected to the second link 15c via a connecting shaft 19c. Turnable.

The link mechanism 15, the first blade portion 18, and the second blade portion 19 described above are operated by the linear motion of the ball screw mechanism 13 as shown in FIG.

Specifically, when the drive shaft 15a moves in the direction approaching the blade shaft 20, the first link 15b and the second link 15c move in the opening direction. As a result, the root portions 18b and 19b of the first blade portion 18 and the second blade portion 19 are displaced away from each other, and the cutting portions 18a and 19a of the first blade portion 18 and the second blade portion 19 are closed to each other. Turn to cut off.

On the other hand, when the drive shaft 15a moves away from the blade shaft 20, the first link 15b and the second link 15c move in the closing direction. By this, the root portions 18b, 19b of the first blade portion 18 and the second blade portion 19 are displaced in the direction of approaching each other, and the cutting portions 18a, 19a of the first blade portion 18 and the second blade portion 19 are in the direction of opening to each other Turn.

The operation member 22 of this embodiment is attached so as to be rotatable about the shaft 22a. The operating member 22 is made large in a side view as shown in FIG. 2 etc. It is L-shaped and includes a first operating portion 22b and a second operating portion 22d that extend in different directions from the position where the shaft 22a is provided. The first operating portion 22b is an operating portion for controlling the operation of the motor 12, and by controlling the operation of the motor 12, an opening (closing) operation by the first blade portion 18 and the second blade portion 19 is performed (controlled). The second operation unit 22d is used to perform auxiliary operations (for example, switching of operation modes). The first operation portion 22b and the second operation portion 22d are arranged to face each other, and are exposed to be operable inside the operation member protection portion 17b. Therefore, when a finger is inserted between the first operation portion 22b and the second operation portion 22d, as shown in FIG. 5(b), when the finger is moved to the rear of the shaft 22a (handle portion 17c side), the first operation can be operated As shown in FIG. 5(c), the portion 22b can operate the second operation portion 22d when the finger is moved forward with respect to the shaft 22a (the link cover portion 17a side). When the first operation portion 22b or the second operation portion 22d is operated, the operation member 22 rotates about the shaft 22a. In this way, when the electric scissors 10 pulls the first operation portion 22b to approach the handle portion 17c, the opening and closing operations of the first blade portion 18 and the second blade portion 19 are performed, and the second operation portion 22d is operated When the push operation is performed away from the handle portion 17c, an auxiliary operation is performed. In addition, the first operation portion 22b and the second operation portion 22d are provided so as not to move relative to each other. When the first operation portion 22b is operated, the second operation portion 22d also moves in the same direction as the first operation portion 22b in conjunction with the first operation portion 22b. When the second operating portion 22d is operated, the first operating portion 22b also moves in the same direction as the second operating portion 22d in conjunction with the second operating portion 22d. Therefore, the first operating portion 22b and the second operating portion 22d cannot be operated simultaneously, but are operated separately. When the first operating portion 22b is operated and when the second operating portion 22d is operated, the operating member 22 rotates in a different direction .

In addition, the roller 22c as shown in FIG. 4 is provided in the first operation The inside of the part 22b. The roller 22c is used to push the swing member 23 described later.

When the first operating portion 22b of the operating member 22 is operated, the swinging member 23 tracks the rotation of the operating member 22 and swings. The swing member 23 can swing about the swing shaft 23a, and when the operation member 22 rotates, it is forced to swing by the roller 22c. The swinging member 23 includes a pressing portion 23b configured to face a contact portion 24a of a micro switch 24 described later. When the roller 22c is forced to swing, the pressing portion 23b is pushed into the contact portion 24a of the micro switch 24.

The micro switch 24 detects that the first operating portion 22b of the operating member 22 is operated. As described above, when the first operating portion 22b configured as the operating member 22 is operated, the swing member 23 turns the micro switch 24 on, and by detecting whether the micro switch 24 is conducting or not, it can be determined whether the operating member 22 The first operation portion 22b is operated.

The sensor 25 is used to detect the rotation angle of the operating member 22. As the sensor 25, as long as the operator can detect the operation member 22, regardless of the type, for example, a potentiometer connected to the shaft 22a can be used. In the case of using a potentiometer, the operation amount of the operation member 22 can be grasped carefully.

The operation of the electric shear 10 using the sensor 25 is controlled by the electric shear 10 or a control device (not shown) built in the power supply device. In the control device, when the first operating portion 22b of the operating member 22 is operated to detect that the micro switch 24 is turned on, the rotation angle of the operating member 22 is detected by the sensor 25. Then, according to the detected angle, the motor 12 is rotated forward, and the two blade portions 18, 19 are operated in the closing direction, and when the first operating portion 22b of the operating member 22 is operated to the limit, the two blade portions 18, 19 become Completely closed. In addition, when the first operating portion 22b is released, the operating member 22 is returned by a spring (not shown) starting point. When the sensor 25 detects that the operation member 22 returns to the starting position, the sensor 25 transmits a control signal to the control device. The control device that receives this control signal reverses the motor 12 and operates the two blade portions 18 and 19 to the maximum opening angle. Use two blades 18 and 19 to return to the starting position. At the same time, because the micro switch 24 becomes non-conductive when the operating member 22 returns to the initial position, the two blade portions 18, 19 can be maintained at the maximum opening angle to stop.

The unlock switch 26 is a switch for releasing the electric shear 10 from the locked state and moving it to the standby state. The electric shear 10 of the present embodiment is aimed at improving safety, and is configured to obtain: a locked state in which the motor 12 does not operate even if the operating member 22 is operated; and a standby state in which the motor 12 is operated by the operation of the operating member 22 action. In addition, when the main power supply is turned on (that is, when the power switch provided in the power supply device or the cable is turned on), it is controlled to be automatically locked. In order to make the electric shear 10 operable, it is necessary to shift from this locked state to the standby state. In the present embodiment, when the operation member 22 and the unlock switch 26 are operated simultaneously in the locked state, the state shifts to the standby state.

As shown in FIG. 6, this unlock switch 26 is provided at the rear end of the housing 17. In particular, the unlock switch 26 is provided at the rear end portion 17d of the housing 17, and is provided at a position where the finger is not in contact with the hand of the operating member 22. Specifically, it is arranged at a position where the rear surface 17e of the housing 17 can be pushed. At the rear end surface 17e of the housing 17, the protective wall 17f is provided so as to cover the periphery of the unlock switch 26, and it is a structure that prevents things from being accidentally pushed into the unlock switch 26.

As shown in FIG. 7, the unlock switch 26 is biased outward by the spring 27, and when the push-in operation is performed against the bias of the spring 27, the magnet 26a fixed to the front end of the unlock switch 26 is close to the mechanical body Huo 尔IC28. Therefore, when the unlock switch 26 is pushed, the Hall IC 28 can detect the operation. After detecting the operation of the unlock switch 26, the Hall IC 28 outputs the operation signal of the unlock switch 26 to the control device. In addition, after detecting the operation of the operating member 22, the micro switch 24 (or the sensor 25) also outputs the operating signal of the operating member 22 to the control device. The control device executes the control of shifting from the locked state to the standby state when receiving the operation signal of the unlock switch 26 and the operation signal of the operation member 22 at the same time. That is, when the user pushes the unlock switch 26 to operate the operation member 22, or when the user has operated the operation member 22 to push the unlock switch 26, the state of the machine is shifted from the locked state to the standby state.

In addition, in a case where the operation member 22 in the standby state is not operated for a predetermined time or longer, it is controlled to automatically become the locked state. Therefore, even if the electric shear 10 is left in the middle of work, safety can be ensured.

Of course, in the case where the operating member 22 and the unlock switch 26 are simultaneously operated in the standby state, contrary to the above, the standby state is shifted to the locked state. Therefore, when the use of the electric shear 10 is interrupted, it can be set to the locked state to prevent misoperation. When the electric shears 10 are not used, if the electric shears 10 are set to the locked state in advance by the operation described above, the two blade portions 18 and 19 can be kept closed, so safety can be improved.

In the above description, the state is changed when the first operating portion 22b of the operating member 22 is operated, but alternatively, when the second operating portion 22d of the operating member 22 is operated, in other words, the operating member 22 When the operation is performed in a direction different from that of the cutting operation, the state is changed. In this case, when the second operation portion 22d of the operation member 22 is operated, this operation is detected by the sensor 25. The sensor 25 that detects the operation of the second operation portion 22d is directed to the control device The operation signal of the operation member 22 is output. However, when the control device receives the operation signal of the unlock switch 26 and the operation signal of the operation member 22 at the same time, it executes the control of shifting from the locked state to the standby state or from the standby state to the locked state.

According to this configuration, the operation required for unlocking (operation of the second operation section 22d) and the operation required for the cutting operation (operation of the first operation section 22b) can be clearly distinguished, so that erroneous operation is difficult to occur.

As shown in the above description, according to the present embodiment, it is configured to obtain: the locked state, the operation of the motor 12 is not permitted; and the standby state, the motor 12 is operated by the operation of the operating member 22. When the operating member 22 and the unlock switch 26 are operated at a predetermined timing in the locked state, the standby state is established. That is, when the operation member 22 and the unlock switch 26 are operated at a predetermined timing, the state transition is made from the locked state to the standby state, and the machine is operable. If the special operation of operating a plurality of switches in this way is not performed, the machine will not become operable, so children or people who do not know how to use the machine will not move the machine. Because special operations are not performed in this way, the machine does not move, so accidents can be effectively prevented.

In addition, since the main power supply is turned on immediately after the main power supply is turned on, only the main power supply is turned on, and even if the operation member 22 is operated, the machine does not operate. Therefore, there is no danger that a child or a person who does not know how to use the machine may operate the operating member 22 by mistake.

In addition, the unlocking switch 26 is provided at a position where the finger is not in contact with the operation member 22. According to this configuration, the possibility of accidentally operating the unlock switch 26 and the operating member 22 becomes low. In other words, the possibility of a child or a person who does not know the usage of the machine erroneously unlock becomes lower, and the safety can be further improved.

Also, operating the operating member 22 and the solution simultaneously in the locked state When the switch 26 is locked, the standby state is reached. According to this configuration, since the lock state can be shifted to the standby state by a simple operation, the workability is excellent.

In addition, when the standby state does not detect an operation for a predetermined time or longer, it becomes the locked state. According to this configuration, the machine will not be left unattended for a long time while it is still on standby. Because children or people who do not know how to use the machine will not operate the machine that is placed in the empty space of the operation room, it will not move, so it can improve safety.

In addition, in the above-mentioned embodiment, the standby state is created when the operating member 22 and the unlock switch 26 are simultaneously operated in the locked state. However, as an embodiment of the present invention, it is not limited to this, and it may be operated in a predetermined time sequence in the locked state. The member 22 and the unlock switch 26 are in a standby state.

For example, when the unlocking switch 26 is operated within a predetermined time after operating the operating member 22 in the locked state, the standby state may be set. Also, it may be configured to be in a standby state when the operating member 22 is operated within a predetermined time after the unlock switch 26 is operated in the locked state. At that time, any one or both of the operating member 22 and the unlock switch 26 may be operated plural times, or either or both of the operating member 22 and the unlock switch 26 may be continuously operated for a fixed time as a condition for state transition.

In addition, in the above-described embodiment, the unlock switch 26 is provided on the rear end surface 17e of the housing 17, but this is not limited to this, and the switch may be provided at another position. As long as the finger is placed at a position where the finger of the operation member 22 is not in contact, the switch may be provided at a position other than the rear end 17d of the housing 17 or any position in front of the operation member protection portion 17b. In addition, when the main body of the electric shear 10 (the part held by the hand) is connected to the power supply device by a cable, the unlock switch 26 may not be provided on the main body of the electric shear 10. For example, you can also unlock The switch 26 is installed in the middle of the cable or the power supply device. In the case where the unlock switch 26 is installed in the middle of the cable or the power supply device in this way, the unlock switch 26 can also be installed at a position where the finger is not in contact with the hand of the operating member 22.

Furthermore, as shown in FIG. 8, the unlock switch 29 may be provided at a position where the finger is not in contact with the hand of the operating member 22. The unlock switch 29 is provided on the handle portion 17c, and detects an operation signal when the handle portion 17c is grasped. In addition, in the case where the unlock switch 29 is provided in a position where the finger is not in contact with the hand of the operating member 22 in this way, in order to reliably prevent misoperation, the unlocking switch 29 is operated a plurality of times and the operating member is continuously operated for a fixed time 22 As a condition for state transition, etc., the operation required for unlocking becomes complicated and better.

In addition, the electric shear 10 of the above-mentioned embodiment is a double-blade movable type in which two blades are movable on both sides, but it is not limited to this, and is a single-blade movable type in which one blade is fixed and the other blade is moved The electric scissors 10 can also be applied to the present invention.

10‧‧‧Electric scissors

11‧‧‧Cable connection

17‧‧‧Housing

17a‧‧‧Link cover part

17b‧‧‧Operation member protection department

17c‧‧‧handle

17d‧‧‧ Rear

17e‧‧‧ Rear face

17f‧‧‧Protection wall

18‧‧‧1st blade

19‧‧‧ 2nd blade

20‧‧‧ Blade shaft

22‧‧‧operating member

22b‧‧‧First operation section

22d‧‧‧ 2nd operation section

26‧‧‧Unlock switch

Claims (5)

An electric shear includes two blades, and is characterized by including: a power source for closing at least one of the two blades; an operating member for controlling the operation of the power source; and an unlocking switch for coupling with the operating member Separately set; configured to obtain: locked state, which does not permit the action of the power source; and standby state, which is operated by the operation member and the power source acts; in the locked state, the operation member is operated at a predetermined timing and The unlocked switch becomes the standby state; when the operation member and the unlock switch are operated simultaneously in the standby state, it becomes the locked state. For example, the electric shear in the first scope of the patent application, in which the locked state is immediately after the main power source is turned on. For example, the electric shear of claim 1 or 2, wherein the unlocking relationship is set at a position where the finger is not in contact with the hand of the operating member. For example, the electric shears of patent application item 1 or 2, in which the standby state becomes the locked state when no operation is detected for more than a predetermined time. For example, the electric shears of claim 1 or 2, which further includes a casing; the unlocking relationship is provided on the rear end side of the casing.

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